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Anti-coagulants

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https://www.readbyqxmd.com/read/28432098/inhibitory-effect-of-coumarin-on-syntrophic-fatty-acid-oxidizing-and-methanogenic-cultures-and-biogas-reactor-microbiomes
#1
Denny Popp, Caroline M Plugge, Sabine Kleinsteuber, Hauke Harms, Heike Sträuber
Coumarins are widely found in plants as natural constituents having antimicrobial activity. When considering plants rich in coumarins for biogas production, adverse effects on microorganisms driving the anaerobic digestion process are expected. Furthermore, coumarin derivatives like warfarin, which are used as anti-coagulating medicine, are found in wastewater affecting its treatment. Coumarin as the structure common to all coumarins inhibits the anaerobic digestion process. However, details of this inhibition are still elusive...
April 21, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28429033/clinics-in-diagnostic-imaging-176-acute-embolic-occlusion-of-the-coeliac-artery
#2
Chinthaka Appuhamy, Justin Kwan, Martin Weng Chin H'ng, Sriram Narayanan, Sundeep Punamiya
A 52-year-old man, who had a background of chronic heart disease and atrial fibrillation, as well as non-compliance with warfarin therapy, presented with a two-week history of worsening upper abdominal pain. Computed tomography mesenteric angiography showed complete embolic occlusion of the coeliac artery with resultant segmental splenic infarction, and thrombus within the left ventricle. A decision was made to proceed with catheter-directed thrombolysis. Subsequent follow-up angiogram at 12 hours showed successful treatment with complete dissolution of the coeliac embolus...
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28427942/inhibitory-effects-of-ethyl-pyruvate-on-platelet-aggregation-and-phosphatidylserine-exposure
#3
Wenjin Li, Xinyu Yang, Minyuan Peng, Can Li, Guangfu Mu, Fangping Chen
Ethyl pyruvate (EP) is a stable lipophilic pyruvate derivative. Studies demonstrated that EP shows potent anti-oxidation, anti-inflammatory and anti-coagulant effects. Inflammation and coagulation are closely interacted with platelet activation. However, it is unclear whether EP has anti-platelet effects. Therefore, we investigated the anti-platelet effect of EP in this study in vitro. We found that EP inhibited agonists induced platelets aggregation, ATP release and adhesion to collagen. Flow cytometric analysis revealed that EP inhibited agonist induced platelets PAC-1 binding, as well as P-selectin and CD40L expression...
April 18, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28418077/therapeutic-protein-deimmunization-by-t-cell-epitope-removal-antigen-specific-immune-responses-in-vitro-and-in-vivo
#4
Saeme Asgari, Azadeh Ebrahim-Habibi, Mehdi Mahdavi, Mohammad Choopani, Hasan Mirzahoseini
Hirudin III is an effective anti-coagulant; however, in 40% of treated patients, a high-titer of anti-Hirudin III IgG antibodies is observed. Development of antibody responses requires the activation of helper T lymphocyte (HTL), which is dependent on peptide epitopes binding to HLA class II molecules. Based on computational prediction softwares, four new mutants of Hirudin III, T4K, S9G, V21G, and V21K, had been designed with the aim of reducing the binding affinity of these HTL epitopes. The constructed mutants have been purified and assayed for bioactivity...
April 18, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28415603/synthesis-and-evaluation-of-anthranilamide-based-derivatives-as-fxa-inhibitors
#5
Changjiang Huang, Wenzhi Wang, Yao Li, Shijun Zhang, Fancui Meng, Weiren Xu, Jing Yuan, Ligong Chen
Factor Xa (FXa) plays a significant role in the blood coagulation cascade and is a promising target for anticoagulation drugs. Three oral FXa inhibitors have been approved by FDA for treating thrombotic diseases. In this study, 43 novel compounds were synthesized anthranilamide-based FXa inhibitors aiming to ameliorate the toxicity of traditional FXa inhibitors in clinic. The data indicated that the compounds 6a, 6a-b, 6a-e, 6k, 6k-a and 6k-b showed remarkable FXa inhibitory activity and excellent selectivity over thrombin in vitro...
March 21, 2017: Oncotarget
https://www.readbyqxmd.com/read/28411882/in-vitro-generation-of-interleukin-10-secreting-b-regulatory-cells-from-donor-adipose-tissue-derived-mesenchymal-stem-cells-and-recipient-peripheral-blood-mononuclear-cells-for-potential-cell-therapy
#6
Kunal S Gupte, Aruna V Vanikar, Hargovind L Trivedi, Chetan N Patel, Jignesh V Patel
BACKGROUND: Interleukin-10 secreting B-cells are a major subset of B-regulatory cells (B-regs), commonly recognized as CD19(+)/38(hi)/24(hi)/IL10(+). They carry out immunomodulation by release of specific cytokines and/or cell-to-cell contact. We have generated B-regs in-vitro from donor adipose tissue derived mesenchymal stem cells (AD-MSC) and renal allograft recipient (RAR) peripheral blood mononuclear cells (PBMC) for potential cell therapy. MATERIAL AND METHODS: Mononuclear cells separated by density gradient centrifugation from 50 ml anti-coagulated blood of 15-RAR and respective donors were analysed for baseline B-regs using appropriate antibodies...
February 2017: Biomedical Journal
https://www.readbyqxmd.com/read/28402449/enhancement-of-trophoblast-differentiation-and-survival-by-low-molecular-weight-heparin-requires-heparin-binding-egf-like-growth-factor
#7
Alan D Bolnick, Jay M Bolnick, Hamid-Reza Kohan-Ghadr, Brian A Kilburn, Omar J Pasalodos, Pankaj K Singhal, Jing Dai, Michael P Diamond, D Randall Armant, Sascha Drewlo
STUDY QUESTION: Does low molecular weight heparin (LMWH) require heparin-binding epidermal growth factor (EGF)-like growth factor (HBEGF) signaling to induce extravillous trophoblast differentiation and decrease apoptosis during oxidative stress? SUMMARY ANSWER: LMWH increased HBEGF expression and secretion, and HBEGF signaling was required to stimulate trophoblast extravillous differentiation, increase invasion in vitro and reduce trophoblast apoptosis during oxidative stress...
April 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28394734/optimization-of-bioengineered-heparin-heparan-sulfate-production-for-therapeutic-applications
#8
Megan S Lord, MoonSun Jung, John M Whitelock
Heparin has been used clinically as an anti-coagulant for more than 100 y and the major source of this therapeutic is still animal tissues. Contamination issues in some batches of heparin over 10 y ago have highlighted the need to develop alternative methods of production of this essential drug. (1) Bioengineering heparin by expressing serglycin in mammalian cells is a promising approach that was recently reported by the authors. (2) This addendum explores the approaches that the authors are taking to increase the yield of recombinantly expressed serglycin decorated with heparin/heparan sulfate focusing on cell culture and bioreactor conditions and proposes that the cell microenvironment is a key modulator of heparin biosynthesis...
April 10, 2017: Bioengineered
https://www.readbyqxmd.com/read/28393040/vitreous-haemorrhage-a-population-based-study-of-the-incidence-and-risk-factors-in-taiwan
#9
Ching-Yu Wang, Wai-Man Cheang, De-Kuang Hwang, Ching-Heng Lin
AIM: To report the epidemiology and incidence of vitreous hemorrhage and to evaluate risk factors for patients with vitreous hemorrhage (VH) in Taiwan. METHODS: A retrospective population-based study. Analyzing a sample of one million subjects from all enrollees of the Taiwan Health Insurance programme. All data were obtained from the Taiwan Health Insurance Research Database, which contained patient sex, date of birth, all records of clinical visits and hospitalizations, and diagnosis codes as included in the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28392913/low-molecular-weight-heparin-versus-unfractionated-heparin-in-the-management-of-cerebral-venous-thrombosis-a-systematic-review-and-meta-analysis
#10
REVIEW
Anjum Qureshi, Andrea Perera
INTRODUCTION: There are two main choices of anti-coagulation in cerebral venous thrombosis: Unfractionated heparin versus low molecular weight heparin. A consensus is yet to be reached regarding which agent is optimal. Therefore the aim of this systematic review and meta-analysis was to identify which agent is most effective in treating CVT. METHODS: Databases Pubmed (MEDLINE), Google Scholar and hand-picked references from papers of interest were reviewed. Studies comparing the use of low molecular weight heparin and unfractionated heparin in adult patients with a confirmed diagnosis of cerebral vein thrombosis were selected...
May 2017: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/28377232/comparison-of-safety-and-efficacy-of-unfractionated-heparin-versus-bivalirudin-in-patients-undergoing-percutaneous-coronary-intervention
#11
Ahmed Rehmani, Chris Judkins, Alan Whelan, Michael Nguyen, Carl Schultz
BACKGROUND: Anti-platelet and anti-coagulant adjunctive therapies are associated with a clinically significant increased risk of major bleeding. We retrospectively assessed in hospital major adverse clinical events (MACE) and major bleeding in patients undergoing percutaneous coronary intervention (PCI) who received either unfractionated heparin (UFH) or bivalirudin. METHOD: Consecutive patients undergoing PCI for acute coronary syndrome (ACS) at Fremantle Hospital from August 2008 to December 2013 were identified...
February 28, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28371141/design-of-the-effect-of-adaptive-servo-ventilation-on-survival-and-cardiovascular-hospital-admissions-in-patients-with-heart-failure-and-sleep-apnoea-the-advent-hf-trial
#12
Owen D Lyons, John S Floras, Alexander G Logan, Robert Beanlands, Joaquin Durán Cantolla, Michael Fitzpatrick, John Fleetham, R John Kimoff, Richard S T Leung, Geraldo Lorenzi Filho, Pierre Mayer, Lisa Mielniczuk, Debra L Morrison, Clodagh M Ryan, Frederic Series, George A Tomlinson, Anna Woo, Michael Arzt, Sairam Parthasarathy, Stefania Redolfi, Takatoshi Kasai, Gianfranco Parati, Diego H Delgado, T Douglas Bradley
INTRODUCTION: Both types of sleep-disordered breathing (SDB), obstructive and central sleep apnoea (OSA and CSA, respectively), are common in patients with heart failure and reduced ejection fraction (HFrEF). In such patients, SDB is associated with increased cardiovascular morbidity and mortality but it remains uncertain whether treating SDB by adaptive servo-ventilation (ASV) in such patients reduces morbidity and mortality. AIM: ADVENT-HF is designed to assess the effects of treating SDB with ASV on morbidity and mortality in patients with HFrEF...
April 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28367652/astragaloside-iv-inhibits-pma-induced-epcr-shedding-through-mapks-and-pkc-pathway
#13
Yu Ma, Yi Zhao, Ran Zhang, Xiaoxia Liang, Zhongqiong Yin, Yi Geng, Gang Shu, Xu Song, Yuanfeng Zou, Lixia Li, Lizi Yin, Guizhou Yue, Yinglun Li, Gang Ye, Changliang He
Astragaloside IV (AS-IV), a main active substance isolated from Astragalus membranaceus Bunge, has been shown to have multiple pharmacological effects. Endothelial cell protein C receptor (EPCR) is a marker of inflammation, and is also a major member of protein C (PC) anti-coagulation system. EPCR can be cut off from the cell surface by tumor necrosis factor-α converting enzyme (TACE), which is controlled through mitogen-activated protein kinase (MAPK) and protein kinase C (PKC) pathways. To develop novel therapeutic drug for EPCR shedding, the effect of AS-IV was studied in phorbol-12-myristate 13-acetate (PMA)-induced human umbilical vein endothelial cells (HUVECs) and the potential molecular mechanism of AS-IV action was investigated...
April 3, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28363170/anti-coagulative-and-gastrointestinal-motility-regulative-activities-of-fructus-aurantii-immaturus-and-its-effective-fractions
#14
Wangxiao Tan, Ye Li, Yu Wang, Zhaojian Zhang, Ting Wang, Qian Zhou, Xiaoying Wang
OBJECTIVE: Fructus Aurantii Immaturus (FAI) has been used in the treatment of gastrointestinal disorders (GIDs) in traditional Chinese medicine (TCM) for thousands of years, which also has been found to have effects on cardiovascular diseases (CVDs) in recent years. The current study aimed at investigating the anti-coagulative and gastrointestinal motility regulative activities of different fractions isolated from FAI, which may have both effects on gastrointestinal and cardiovascular systems, in the manners of network pharmacology analysis and experiments in vivo and in vitro...
March 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28356138/can-floseal%C3%A2-be-applied-safely-during-otologic-surgery-assessment-of-ototoxicity-in-a-chinchilla-animal-model
#15
Carol Nhan, Aren Bezdjian, Abdullah Alarfaj, Sam J Daniel
BACKGROUND: In otologic surgery good visualization is paramount, and patients with bleeding diatheses or who need to be anti-coagulated can present a significant challenge. Here, we determine whether Floseal™, a hemostatic matrix, is ototoxic in a validated animal model. METHODS: Nine chinchillas housed in the animal care facilities of the Montreal Children's Hospital Research Institute were used for the study. After a myringotomy incision was made in each tympanic membrane, baseline auditory brainstem response measurements were performed at 8, 20, and 25 kHz...
March 29, 2017: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/28353362/anti-coagulation-complications-in-pregnancies-with-severe-pulmonary-arterial-hypertension
#16
Tiffany Herrero, Erin Martin, David S Poch, Hilary A Roeder
BACKGROUND: Epoprostenol, a potent vasodilator, is the treatment of choice for severe pulmonary arterial hypertension (PAH) in pregnancy. However, its inhibition of platelet aggregation increases the risk of coagulation complications with conjunctive use of anti-coagulants for thromboprophylaxis. CASES: Case 1 demonstrates a pregnancy complicated by thrombocytopenia. Case 2 describes a pregnancy with newly-diagnosed PAH at 35 weeks who delivered by repeat cesarean delivery complicated by a wound hematoma...
March 29, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28351189/effects-of-an-injectable-platelet-rich-fibrin-on-osteoblast-behavior-and-bone-tissue-formation-in-comparison-to-platelet-rich-plasma
#17
Xuzhu Wang, Yufeng Zhang, Joseph Choukroun, Shahram Ghanaati, Richard J Miron
Platelet-rich plasma (PRP) has been utilized for many years as a regenerative agent capable of inducing vascularization of various tissues using blood-derived growth factors. Despite this, drawbacks mostly related to the additional use of anti-coagulants found in PRP have been shown to inhibit the wound healing process. For these reasons, a novel platelet concentrate has recently been developed with no additives by utilizing lower centrifugation speeds. The purpose of this study was therefore to investigate osteoblast behavior of this novel therapy (injectable-platelet-rich fibrin; i-PRF, 100% natural with no additives) when compared to traditional PRP...
March 29, 2017: Platelets
https://www.readbyqxmd.com/read/28344684/splenic-vein-thrombosis-as-a-rare-complication-of-disseminated-tuberculosis-imaging-diagnosis-and-case-report
#18
Satarupa Roy, Shuchi Bhatt, Rajesh Rawal, Anupama Tandon, Neha Meena
BACKGROUND: Venous thromboembolism is a known but rare complication associated with Mycobacterium tuberculosis infection. The reported incidence of venous thromboembolism is 1.5-3.4% of infected patients, and it occurs due to a hypercoagulable state induced by the associated inflammation. CASE REPORT: A young woman with pulmonary tuberculosis was found to have disseminated tuberculosis and a clinically unsuspected partial thrombus in the splenic vein on imaging...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28342265/efficacy-and-safety-of-edoxaban-for-treatment-of-portal-vein-thrombosis-following-danaparoid-sodium-in-patients-with-liver-cirrhosis
#19
Yuko Nagaoki, Hiroshi Aikata, Kana Daijo, Yuji Teraoka, Fumi Shinohara, Yuki Nakamura, Masahiro Hatooka, Kei Morio, Takashi Nakahara, Tomokazu Kawaoka, Masataka Tsuge, Akira Hiramatsu, Michio Imamura, Yoshiiku Kawakami, Hidenori Ochi, Kazuaki Chayama
AIM: To compare the efficacy and safety of edoxaban and warfarin for treatment of portal vein thrombosis (PVT) following danaparoid sodium in patients with liver cirrhosis. METHODS: Fifty cirrhotic patients with PVT treated initially for 2 weeks by danaparoid sodium were enrolled in this retrospective cohort study. Treatment was later switched to either edoxaban (n = 20) or warfarin (n = 30). We compared the efficacy and safety of edoxaban and warfarin for up to 6 months...
March 24, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28341384/field-demonstration-of-polymer-amended-in-situ-chemical-oxidation-pa-isco
#20
Jeff A K Silva, Michelle Crimi, Thomas Palaia, Saebom Ko, Sean Davenport
The methods and results of the first field-scale demonstration of polymer-amended in situ chemical oxidation (PA-ISCO) are presented. The demonstration took place at MCB CAMLEJ (Marine Corps Base, Camp Lejeune) Operable Unit (OU) 15, Site 88, in Camp Lejeune, North Carolina between October and December 2010. PA-ISCO was developed as an alternative treatment approach that utilizes viscosity-modified fluids to improve the in situ delivery and distribution (i.e. sweep-efficiency) of chemical oxidants within texturally heterogeneous contaminated aquifers...
March 14, 2017: Journal of Contaminant Hydrology
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